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A person is most likely to experience serious biological effects when exposed to which of the following forms of electromagnetic radiation?
A) Microwaves
B) infrared
C) Ultraviolet
D) X rays
A certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. The volume of the oxygen sample collected was 870 mL at 40C and a barometric pressure of 755 torr.
there are three compounds are given as i. pentane ii. 2-methylbutane iii. 23-dimethylbutane iv. 22-dimethylpropane
Copper(I) ions in aqueous solution react with NH3 according to, Cu+ + 2 NH3 Cu(NH3)2+ Kf = 6.3x10^10 M-2 Calculate the solubility of CuBr (Ksp = 5.3x10^-9) in a solution in which the equilibrium concentration of NH3 is
How many kilojoules are released when 10.0g of steam condenses at 100 degrees C and cools to 0 degrees C?
a 1.70-g sample of a large biomolecule was dissolved in 14.0 g of carbon tetrachloride. the boiling point of this
A closed container holds 3.14 mol of C(s) and 12.3 mol of O2(g) at 4.94 atm and -4°C. After the reaction has been run to completion (the only product is CO2(g)).
SO2 and O2 react together to form SO3. The resulting reaction mixture is an equilibrium involving all three compounds. Which of the following changes will cause the equilibrium to shift to the left
Using a sample of a compound containing only oxygen and chlorine reacts with an excess of H2 gas to give 0.206 g water and 0.278 g HCl
At a certain temperature the following reactions have the constants shown- Calculate the equilibrium constant Keq for the following reaction at that temperature- 2SO2 (g) + O2 (g) 2SO3 (g)
What is the chemical formula of strontium nitrate. Strontium is in what group on the periodic table
Determine which type of ion exchange chromatography would work best and at which pH would you run this column.
when an atom or group of atoms is substituted for an h in benzene c6h6 the boiling point changes. explain the order of
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